The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 1999
Filed:
Jun. 30, 1994
Applicant:
Inventor:
Richard David Greenblatt, Belmont, MA (US);
Assignee:
Academy of Applied Science, Concord, NH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; H04L / ;
U.S. Cl.
CPC ...
375222 ; 375377 ; 379 9329 ; 379 9309 ;
Abstract
A method and apparatus for 'training' high speed telephonic modems to adjust or become corrected to obviate imperfections in the telephone channel or line, such as echoes, phase changes and other effects, while concurrently with voice communication on such simple telephone lines through sending test signals in unoccupied spaces of successive time frames created by compressing concurrent digital voice therein.